#include <stddef.h>

#define COLS 5
#define ROWS 7
static int matrix[ROWS][COLS];

void init_matrix(int x){
    for (size_t i = 0;i < ROWS;i++){
        for (size_t j = 0;j < COLS;j++){
            matrix[i][j] = x;
        }
    }
}